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A Predictive Current Control Technique on Fuel Cell Based Distributed Generation in a Standalone AC Power Supply 904 [22] Premrudeepreechacharn, S., and T. Poapornsawan, 2000. “Fuzzy Logic Control of Predictive Current Control for Grid connected Single Phase Inverter”, IEEE Conf. Photovoltaic Specialists Conference, pp. 1715-1718. [23] Rodriguez, J., J. Pontt, C.A. Silva, P. Correa, P. Lezana, P. Cortes, and U. Ammann, 2007. “Predictive Current Control of a Voltage Source Inverter”, IEEE Trans. Industrial Electronics , 54, pp. 495 – 503. [24] Rodriguez, J., J. Pontt, C. Silva, P. Cortes, U. Amman, and S. Rees, 2004. “Predictive current control of a voltage source inverter”, Power Electronics Specialists Conference, PESC 04, in Proc. IEEE, 3, pp. 2192 - 2196. [25] Suzuoka, K., S. Moisseev, L. Gamage, K. Soshin, K. Nishida, and M. Nakaoka, 2003. “Boost Transformer Linked Full Bridge Soft-Commutation DC-DC Power Converter with Secondary- Side Phase-Shifted PWM Rectifier Switches”, IEEE Conf. IECON '03, 1, pp. 49-54. [26] Wang, C., and M. H. Nehrir, 2006. “Control of PEM Fuel Cell Distributed Generation Systems”, IEEE Trans. Energy Conversion, 21(2), pp. 586-595. [27] Wang, C., and M. H. Nehrir, 2006. “Short-time Overloading Capability and Distributed Generation Applications of Solid Oxide Fuel Cells”, accepted for IEEE Trans. Energy Conversion. [28] Wen. X., F. Lin, and T. Q. Zheng, 2006. “Dynamic Model and Predictive Current Control of Voltage Source Converter Based HVDC”, in Proc. IEEE, PowerCon, pp. 1–5.
European Journal of Scientific Research ISSN 1450-216X Vol.20 No.4 (2008), pp.905-913 © EuroJournals Publishing, Inc. 2008 http://www.eurojournals.com/ejsr.htm Effects of Ethyl acetate Portion of Syzygium Aromaticum Flower Bud Extract on Indomethacin-Induced Gastric Ulceration and Gastric Secretion Okasha Mohammad Abdul- Halim Department of Human Physiology, Faculty of Medicine Ahmadu Bello University, Zaria, Nigeria Magaji Rabiu Abdussalam Department of Human Physiology, Faculty of Medicine Bayero University, Kano, Nigeria Abubakar Mujtaba Suleiman Department of Pharmacognosy and Drug Development, Faculty of Pharmaceutical Sciences, Ahmadu Bello University, Zaria, Nigeria Fatihu Muhammad Yakasai Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine Ahmadu Bello University, Zaria, Nigeria Abstract Clove, the dried flower bud of Syzygium aromaticum (Family: Myrtaceae) is one of the important herbs used as indigenous medicine in India, and in Unani Medicine. It contains flavonoids and tannins among others that have bee proven to stimulate the production of prostaglandins which contribute to the maintenance of basal gastric mucosal blood flow and mucus secretion that enhance the mucosal integrity defense and repair of injury. In the present work, we investigated the gastric anti-ulcerogenic and antisecretory effects of the ethyl acetate portion of the ethanolic extract of Syzygium aromaticum (SaETAC) flower bud in rats, using indomethacin as a necrotizing agent. SaETAC demonstrated a gastro-protective anti-ulcerogenic effect as well as a marked decrease of volume, titritable acidity and acid output of gastric secretion in rats. The extract proved to possess some phytochemicals which may contribute to the observed gastric antiulcerogenic and anti-secretory activity. Keywords: Syzygium aromaticum, ethyl acetate, indomethacin, gastric ulcer, gastric secretion 1. Introduction Clove is the dried reddish brown flower bud of Syzygium aromaticum (Family: Myrtaceae), an evergreen tropical tree 10-20 cm in height, indigenous to India, Indonesia, Zanzibar, Mauritius and Sri Lanka. Sometimes, it is called Eugenia caryophyllata. It is one of the important herbs used as
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